Final answer:
In a boot from SAN setup, a diagnostic partition is configured on a shared SAN LUN to store fault information for multiple hosts.
Step-by-step explanation:
In a boot from SAN setup, a diagnostic partition is typically configured on a shared SAN LUN that can be accessed by multiple hosts. This partition is used to store fault information for more than one host, making it easier to diagnose and troubleshoot issues. Therefore, the statement is True.